Exercising in hot weather: what to know
In hot weather, your body works harder than you might think.
According to the image, heat can make you sweat as much as 1–3 litres per hour, losing water and electrolytes at the same time.
Why it matters
- Sweat helps cool the body down
- But sweat also carries away key electrolytes such as sodium and potassium
Signs to watch for
- Thirst
- Tiredness
- Cramps
- Dizziness
- Headache
What to do
- Drink enough water before, during and after exercise
- Sip small amounts often rather than all at once
- Replace the electrolytes lost through sweat
Plan before you train
- Pick a time of day that isn't too hot
- Wear breathable clothing
- Use a cool towel to help beat the heat
- Rest when you need to
More images in this series (tap to enlarge)
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Exercising in hot weather takes planning. Listen to your body and rest when you need to.
Image and reference from official material in the MyHerbalife media library: Exercising in hot weather (added to the library: 17 Jul 2026)
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